NewStats: 3,263,708 , 8,181,113 topics. Date: Saturday, 07 June 2025 at 01:08 PM 5a1jh

HeavenlyBang:


They buy a HF inverter from a rubbish brand, or grossly misuse it, then say HF inverters are cheap and unreliable when it inevitably fails.

What do you call "misuse"?
They hit it with a hammer or what?
Or is the misuse that they just use heavy loads not meant for HF inverters and they fail in less than 2 years? If its the latter, then what was earlier said was correct.
If none of this, then in what way do they "misuse" it?

I'm honestly trying to learn

Rumplesteelskin:


Thanks for the follow up. Yes, I did. After it went off at 20.8v, I disconnected the battery and used an external 20a charger to charge, and I arrived at a different conclusion. The battery recommended charge current is 40a and all my power sources are under 40, 30a mostly. I figured the battery require serious charge current from 26.4v upward and my charging sources can't provide that. From 26.5 to 26.6 takes almost an hour with the 20a charger. With this charger, I would need like 14 hours for a full charge.

My options now are either to upgrade the inverter to one that charges from 40a and above, or get an external charger above 40a.

Hmmm.....seeing as the aim is to to confirm that your batteries can fully charge up and you can get full capacity, why not connect the external charger, inverter and everything else at the same time to charge it up?

This will definitely shorten the time to charge and prevent you from spending money you might not need to spend if the battery is truly faulty. The longer you leave confirming this, the harder it will be to return the battery.

Rumplesteelskin:


Thanks for the follow up. Yes, I did. After it went off at 20.8v, I disconnected the battery and used an external 20a charger to charge, and I arrived at a different conclusion. The battery recommended charge current is 40a and all my power sources are under 40, 30a mostly. I figured the battery require serious charge current from 26.4v upward and my charging sources can't provide that. From 26.5 to 26.6 takes almost an hour with the 20a charger. With this charger, I would need like 14 hours for a full charge.

My options now are either to upgrade the inverter to one that charges from 40a and above, or get an external charger above 40a.

What's your pv array like?
What kind of inverter do you have ?
I had this similar kind of issue(it would take 10hrs for my battery to move from 13.2v to 14.1v),i discovered that my inverter and solar array couldn't charge my battery effectively until I added another and changed my cc.

Nothing is wrong with your battery.

2pcs of 10kwh 48v Taico lithium batteries successfully installed and completed..

AndroBlaze:


Hmmm.....seeing as the aim is to to confirm that your batteries can fully charge up and you can get full capacity, why not connect the external charger, inverter and everything else at the same time to charge it up?

This will definitely shorten the time to charge and prevent you from spending money you might not need to spend if the battery is truly faulty. The longer you leave confirming this, the harder it will be to return the battery.

Right, it's a big gamble but I have an understanding with the seller. I still have about 2 weeks to do whatever test, but I think the battery is okay. It's probably my set up that is unable to charge it efficiently. My previous battery was less then 2KWh, this is 8KWh, so that's a huge difference.

Combo charging happens with grid/gen plus PV, but grid here is about 3 hours a day and that's not when sunlight is up, the current is also low, with that, charge current is not consistent.

I'm waiting for the Coulomb meter to arrive and hoping that will help to show the batt V and percentage accurately.

ab221:

I'm actually based in PHC, i want to be sure of the price there so that they won't cheat me in the office.

You can get from PHC, you can reach out.

olujosh301:


What's your pv array like?
What kind of inverter do you have ?
I had this similar kind of issue(it would take 10hrs for my battery to move from 13.2v to 14.1v),i discovered that my inverter and solar array couldn't charge my battery effectively until I added another and changed my cc.

Nothing is wrong with your battery.

I agree. My inverter is felicitysolar. Eight 200w connected in series.

isangjohnson:
Does anyone have any idea about Foresolar charge controller?
Does it work with lithium battery?
My customer wanted to set it but he said was needed. I don't know much about it

I've sorted it out

Rumplesteelskin:


I agree. My inverter is felicitysolar. Eight 200w connected in series.

Following your issue has been interesting, especially with all the help and suggestions. Looking forward to seeing you resolve it.

Please put an update on the initial complaint when you finally resolve it, so that anyone with similar issue can see how it got resolved.

Share a picture of your inverter spec sheet and the spec sheet of your s if available.

Your inverter producing less than 40a shouldn't make the battery to not exceed the voltage you described, it can only result in longer charging time if the charging source is consistent for that length of time

Rumplesteelskin:


I agree. My inverter is felicitysolar. Eight 200w connected in series.

Kindly share your solutions for knowledge sake.

isangjohnson:

I've sorted it out

1. Consistent overloading of the inverter.
2. Installation of the inverter in a hot environment with inadequate ventilation.
3. Improper/inadequate protection.
4. Improper setting/configuration.

ask4bk:

What do you call "misuse"?
They hit it with a hammer or what?
Or is the misuse that they just use heavy loads not meant for HF inverters and they fail in less than 2 years? If its the latter, then what was earlier said was correct.
If none of this, then in what way do they "misuse" it?

I'm honestly trying to learn

ask4bk:

What do you call "misuse"?
They hit it with a hammer or what?
Or is the misuse that they just use heavy loads not meant for HF inverters and they fail in less than 2 years? If its the latter, then what was earlier said was correct.
If none of this, then in what way do they "misuse" it?

I'm honestly trying to learn

The working principle of an inverter is hardly some mechanically strenuous process. The electrical energy is already there, all inverters really do is modify the sine waveform from DC to AC. It's not rocket science.

You're not dealing with things like friction, no moving parts (outside of the fans) or anything. Just don't overload your inverter, or give it excess voltage or high current pulses to handle and it'll be fine. Also keep it ventilated so it doesn't overheat. It's not rocket science.

If an inverter fails even with all of that, it's just down to poor machining and factory defects, which can happen to every single piece of engineering, even your darling LF inverters.

You talk about surge like it's some special thing when in reality surge is only relevant relative to the capacity of the inverter.

ask4bk:


Now permit me to sincerely seek your advice.
Would you advice me to constantly run my deep freezer, refrigerator, occasional washing machine and blender on the 6kw Growatt inverter (from fouani) in a dusty environment of far northern Nigeria with constant 40ºc temperature?

If you think it's OK, I'll get it. If not, give me a better alternative.

Every once in a while use a dust blower to get dust off of it.

This is applicable to any inverter you buy as too much dust on electronic components leads to excessive heat and eventual thermal runaway.

Could we be in the last days of lithium? Heavier but possibly cheaper batteries have started their march in the battery capital of the world.

https://www.bbc.com/future/article/20250530-how-electric-scooters-are-driving-chinas-salt-battery-push

AndroBlaze:
Could we be in the last days of lithium? Heavier but possibly cheaper batteries have started their march in the battery capital of the world.

https://www.bbc.com/future/article/20250530-how-electric-scooters-are-driving-chinas-salt-battery-push

Still early days. Lithium is just making inroads. Will there be new tech? Of course, yes. Will they beat the present lithium tech? He|| no!

Some versions of Li-ion batteries now have a USB C port
Source: https://x.com/mkbhd/status/1929608426268598692?s=46

BigDickProblems:
Some versions of Li-ion batteries now have a USB C port
Source: https://x.com/mkbhd/status/1929608426268598692?s=46

These batteries full AliExpress. Surprise MKBHD is just seeing it.

mctfopt:


These batteries full AliExpress. Surprise MKBHD is just seeing it.

Prohibitively expensive, unfortunately. Cheapest is $20 after shipping. For things like remote controls, you're better off buying versions with solar s (cheaper than the batteries sef) if available.

Any personal experience on firman inverters?

BigDickProblems:
Some versions of Li-ion batteries now have a USB C port
Source: https://x.com/mkbhd/status/1929608426268598692?s=46

I've had these for 2 years, but micro usb version. Very nice invention.

They're very cheap too. Has an inbuilt charge indicator. You can get them from your normal average electrical stores.

VALtech:
24v 173ah(4,428kwh) lifepo4 lithium battery

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24v 280ah (7168kwh) lifepo4 lithium battery

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24v 346ah (8,857kwh) lifepo4 lithium battery

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48v 173ah (8,857kwh) lifepo4 lithium battery

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48v 300ah (15360kwh) lifepo4 lithium battery

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made with brand new grade A EVE cells, lastest version 150A JBD Bluetooth bms, customised foreign metal box.
whatsapp 08020574628 or telegram@vvalto

Is this equal to Felicity in of warranty and durability? 15years/5yrs warranty?

How much is the 15360kwh? 48v?

AndroBlaze:
Could we be in the last days of lithium? Heavier but possibly cheaper batteries have started their march in the battery capital of the world.

https://www.bbc.com/future/article/20250530-how-electric-scooters-are-driving-chinas-salt-battery-push

When we get to the Alpha stage of such battery Chemistry, another round of people would come to talk down on all previous battery chemistry as being rubbish and not worth it. They would disRegard the issues with the Salt based battery, and focus on only the Good sides of it

bassdow:
When we get to the Alpha stage of such battery Chemistry, another round of people would come to talk down on all previous battery chemistry as being rubbish and not worth it. They would disRegard the issues with the Salt based battery, and focus on only the Good sides of it

Logic dictates that if it becomes more popular than Lifepo4, it's because of the advantages (price, environmental factors, etc) it offers. So I see no reason why lifepo4 shouldn't be considered inferior to sodium batteries if it actually is.

Technological advancements are supposed to be improvements after all.

bassdow:
When we get to the Alpha stage of such battery Chemistry, another round of people would come to talk down on all previous battery chemistry as being rubbish and not worth it. They would disRegard the issues with the Salt based battery, and focus on only the Good sides of it

I think the main thing I took from the article, at least in the here and now, is that lithium batteries will likely get cheaper as there is more competition, and that the competition, if proven stable, will eventually get far cheaper to produce than lithium.

Also every dog has it's day and as usual oyinbo are working their hardest to ensure that lithium days are numbered. I also like the fact that this is an old chemistry that they are busy perfecting and wonder how many more older chemistries could be revisited and shown to be more relevant for the here and now.

Honestly we should be trying things like this in Africa i.e. instead of deceiving ourselves that we can do new R& D , focus on old discarded technologies and try and revamp them to meet our needs.... it should be cheaper and more easy to achieve.

Good afternoon, Please can one use a Grid-tie Inverter with battery? If Yes, how can it be done and any advice to go for it or not
I want to buy one and send to Nigeria, most I see are grid-tie (Sunny Boy SMA)
Thank you guys for the good works you are all doing

Please what is a fair price for 450 watts Jinko s ?(second hand)

Pabodo:
Good afternoon, Please can one use a Grid-tie Inverter with battery? If Yes, how can it be done and any advice to go for it or not
I want to buy one and send to Nigeria, most I see are grid-tie (Sunny Boy SMA)
Thank you guys for the good works you are all doing

No try am.

1. I don't know if there is expertise about installing it without feeding back into the grid.
2. It probably won't work.
3. If it works and feed back into the grid, you may be supplying electricity to the whole town or worse get someone electrocuted down the line.
4. 3 may not happen because grid tie inverters work with grid, once the grid is down, they also go down.

Finally, it is a very bad idea. Don't do it.

AndroBlaze:
Could we be in the last days of lithium? Heavier but possibly cheaper batteries have started their march in the battery capital of the world.

https://www.bbc.com/future/article/20250530-how-electric-scooters-are-driving-chinas-salt-battery-push

sodium cells are twice as heavy and thus half as energy-dense as Lithium ion cells. Good option for cheap shipping. At least they have something dirt cheap to further knock SLA down the chart and away from the big boys.